ginput: How to prompt for value after each click?
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Hi,
I'm making a little program that loads a photo then calls ginput so I can click on a number of features. For each feature, I want to enter an estimated value.
Click Prompt: Enter thickness: Enter Value
Click Prompt:
etc
Is there anyway to do this?
Thanks,
Cole
采纳的回答
Image Analyst
2014-9-28
For the thickness prompt, try inputdlg().
To get the points, try getpts() if you have the Image Processing Toolbox. Or just put
[x,y] = ginput(1)
into a while loop where you break out of the while loop if the user clicks the right mouse button. Try this:
clc;
close all; % Close all figures (except those of imtool.)
clear; % Erase all existing variables. Or clearvars if you want.
workspace; % Make sure the workspace panel is showing.
fontSize = 24;
imshow('cameraman.tif');
hold on;
maxAllowablePoints = 5; % Whatever you want.
numPointsClicked = 0;
promptMessage = sprintf('Left click up to %d points.\nRight click when done.', maxAllowablePoints);
titleBarCaption = 'Continue?';
button = questdlg(promptMessage, titleBarCaption, 'Continue', 'Cancel', 'Continue');
if strcmpi(button, 'Cancel')
return;
end
while numPointsClicked < maxAllowablePoints
numPointsClicked = numPointsClicked + 1;
[x(numPointsClicked), y(numPointsClicked), button] = ginput(1)
plot(x(numPointsClicked), y(numPointsClicked), 'r+', 'MarkerSize', 15);
if button == 3
% Exit loop if
break;
end
end
% Print to command window
x
y
msgbox('Done collecting points');
更多回答（1 个）
Cole
2014-9-28
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1 个评论
Image Analyst
2014-9-28
编辑：Image Analyst
2014-9-29
There is also a getpts() in the Image Processing Toolbox you may want to take a look at.
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